TEA1721AT-N1 datasheet(8/14 Pages) PHILIPS

No de pièce	TEA1721AT-N1

Description	Ultra-low standby SMPS controller with integrated power switch

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Fabricant	PHILIPS [NXP Semiconductors]

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TEA1721AT

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Preliminary data sheet

Rev. 1 — 24 January 2012

8 of 14

NXP Semiconductors

TEA1721AT

Ultra-low standby SMPS controller with integrated power switch

8.

Characteristics

Table 5.

Characteristics

VCC = 20 V; VFB = 0 V; Rsource = 1.5 Ω; Tj-switch = 25 °C; Tj-controller = 25 °C; all voltages referenced to GND,

positive currents flow into the IC, unless otherwise specified.

Symbol

Parameter

Conditions

Min

Typ

Max

Unit

Supply (Pin: VCC)

ICC(startup)0V

start-up supply current

VCC =0V

-

-1.2

-

mA

ICC(startup)17V

start-up supply current

VCC = VCC(startup)

--0.7

-mA

ICC(energysave)

supply current in

energy save

VFB = 2.8 V, non-switching

90

130

170

µA

ICC(50kHz)

supply current at 50

kHz

530

750

970

µA

VCC(startup)

start-up supply voltage

15

17

19

V

VCC(stop)

stop supply voltage

undervoltage lockout of IC

7.5

8.5

9.5

V

Vovp-VCC

overvoltage protection

voltage level on VCC

40

42

44

V

Totp

overtemperature

protection threshold

temperature on

controller die

-150

-°C

Totp(hys)

overtemperature

protection temperature

hysteresis

-50

-°C

Feedback (Pin: FB)

Vovp-FB

overvoltage protection

voltage level on

regulated flyback

voltage

3.1

3.2

3.3

V

Vsense(fb)CVB

regulated flyback

sense voltage in CVB

mode

2.5

2.55

2.6

V

Vsense(fb)CVB_low

threshold flyback

sense voltage for direct

transition from CVB

mode to CVC mode

due to low output

in burst mode operation

-

2.4

-

V

Vsense(fb)CV

regulated flyback

sense voltage in CV

mode

2.5

2.55

2.6

V

Vth(det)demag(fb)

demagnetization

detection voltage level

on FB pin

25

50

75

mV

Oscillator (Pins: DRAIN and SOURCE)

fburst

burst frequency

burst frequency in CVB mode, without

jitter

390

430

470

Hz

fjit/fsw

jitter frequency to

switching frequency

ratio

in all operation modes except in burst

modes

579%

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